Daily Economics, Business and Finance Study

October 4, 2026 (KST) · Day 14
Today's topic: Why Can Shares Fall on Good Earnings? — Reading Consensus, Guidance and Earnings Surprises

1. Review of yesterday's key points

In Day 13, we used reverse DCF to infer the growth rate, margin and growth duration embedded in the current share price. Today we learn whether reported results exceeded the market's existing expectations, and whether they raised or lowered future expectations.

2. Today's core concept

Share prices respond more sensitively to the gap between results and market expectations than to the absolute level of earnings.

\[\text{Share-price response}\approx\text{Actual results}-\text{Expectations already priced in}\]

The following three statements therefore mean different things.

• Results improved year over year.
• Results exceeded market consensus.
• Future estimates were raised after the earnings release.

The third generally matters most to the share price.

More important than “Were this quarter's figures good?” is
“How much does this release change next quarter's and next year's revenue, margin and FCF outlook?”

Today's learning objectives are:

1. Distinguish consensus, guidance and earnings surprises.
2. Separate the size of a beat from its quality.
3. Understand why future guidance matters more than past results.
4. Explain systematically why shares may fall despite good earnings.
5. Learn what to compare before and after earnings.

3. Concept explained

3-1. Share prices reflect future expectations, not past results

An income statement reports results for a quarter that has already ended. Equity value, however, is the present value of the company's future cash flows.

\[\text{Company value}=\text{Present value of future cash flows}\]

Even strong reported quarterly results may accompany a share-price decline if next quarter's and next year's outlook deteriorates.

Conversely, weak quarterly results may accompany a rise if the cause is temporary and the future outlook is stronger than expected.

The key point is:

\[\text{Past quarterly results}\rightarrow\text{Revised future estimates}\rightarrow\text{Target value and share-price response}\]

3-2. What is consensus?

**Consensus** is the market forecast compiled from estimates by analysts at multiple brokerages.

Typical consensus metrics include:

• Revenue
• Gross margin
• Operating profit
• EBITDA
• Net income
• EPS
• OCF·FCF
• Next quarter's or next year's results
• Industry-specific key KPIs

The important KPIs vary by company.

Shares may fall despite an EPS beat if core operating KPIs are weak. Conversely, the market may view results positively if one-off costs depress EPS but core KPIs are strong.

Limitations of consensus

Consensus is not a perfect measure of market expectations.

• Analysts update estimates at different times.
• Some estimates may reflect outdated guidance.
• An average alone does not reveal the distribution of estimates.
• A wide gap between the highest and lowest estimates implies greater uncertainty.
• Share prices may reflect unofficial expectations above published consensus.
• Institutional investors' internal estimates may differ from public consensus.

Where possible, therefore, also check:

• Mean consensus
• Median
• Highest and lowest estimates
• Estimate changes over the past month
• Estimates immediately before earnings
• Recent revisions by major analysts

3-3. What is an earnings surprise?

Actual results above market expectations are commonly called an earnings surprise; worse-than-expected results are an earnings shock.

A revenue surprise can be calculated as follows.

\[\text{Revenue Surprise}\%=\frac{\text{Actual revenue}-\text{Expected revenue}}{\text{Expected revenue}}\times100\]

EPS surprises use the same method.

\[\text{EPS Surprise}\%=\frac{\text{Actual EPS}-\text{Expected EPS}}{\text{Expected EPS}}\times100\]

For example, if expected EPS is KRW 1,000 and actual EPS is KRW 1,100:

\[ EPS\ Surprise = \frac{1,100-1,000}{1,000}\times100 = 10\% \]

Do not judge solely by the surprise percentage. Distinguish:

Revenue beat

Revenue exceeds consensus. Demand, volumes, pricing or market share may have been stronger than expected.

Margin beat

Operating or gross margin exceeds expectations. Pricing, product mix, costs, utilization or cost control may have been better than expected.

EPS Beat

EPS exceeds expectations. However, this may reflect nonoperating factors such as taxes, interest, foreign exchange, investment valuation gains or share repurchases.

FCF Beat

Operating cash flow or FCF exceeds expectations. Check whether working-capital recovery or deferred CapEx temporarily boosted it.

Earnings quality is generally assessed through:

\[\text{Revenue Beat}+\text{Improved core KPIs}+\text{Improved margins}+\text{Improved FCF}\]

A beat accompanied by all four is more likely to be high quality.

3-4. Always check the quality of an EPS beat

Think of EPS as:

\[EPS=\frac{\text{Net income attributable to common shareholders}}{\text{Diluted shares}}\]

EPS can improve through several routes.

Relatively higher-quality routes

• Revenue growth
• Higher gross margin
• Operating leverage
• Improved product mix
• Repeatable cost efficiencies
• Higher operating profit from the core business

Potentially less repeatable routes

• Gains on asset sales
• Investment equity valuation gains
• One-off tax benefits
• One-off foreign-exchange gains
• Provision reversals
• Litigation-related gains
• Fewer shares following repurchases
• Lower interest expenses
• Discretionary exclusion of restructuring costs

If operating profit misses expectations but a tax benefit produces an EPS beat, headline EPS and the core business point in different directions.

The following adjustment is then necessary.

\[\text{Normalized EPS}=\text{Reported EPS}-\text{Per-share effect of one-off gains}+\text{Per-share effect of one-off losses}\]

Do not automatically exclude every adjustment. If restructuring or stock compensation is excluded as “one-off” every year, it may economically be a recurring cost.

3-5. What is guidance?

**Guidance** is management's outlook for a future quarter or fiscal year.

Guidance may include:

• Revenue or revenue growth
• Gross margin
• Operating profit or operating margin
• EPS
• CapEx
• OCF·FCF
• Tax rate
• Production or shipments
• Demand and inventory
• Growth by business segment
• Non-GAAP expenses
• Stock-based compensation
• Diluted share count

Simply checking whether guidance was raised or lowered is insufficient. Compare these four items:

1. Previous company guidance
2. Newly issued guidance
3. Market consensus
4. Unofficial expectations priced into the shares

3-6. Start by comparing the midpoint of guidance

If next-quarter revenue guidance is KRW 900–1,000 hundred million, its midpoint is:

\[\text{Guidance midpoint}=\frac{900+1,000}{2}=950\text{ hundred million KRW}\]

If consensus is KRW 1,000 hundred million, the midpoint is 5% below expectations.

\[\text{Guidance gap}=\frac{950-1,000}{1,000}\times100=-5\%\]

In practice, also examine the upper and lower bounds.

• Even the upper bound misses consensus
  → Clearly conservative or negative guidance

• The midpoint misses consensus but the upper bound meets or exceeds it
  → Uncertainty remains, but consensus is achievable

• The midpoint exceeds consensus
  → Future estimates may rise

• The guidance range widens
  → Demand, pricing or supply-chain uncertainty may have increased

3-7. Distinguish a beat from a raise

Earnings releases can generally be classified using the following four combinations.

Here, Raise means more than an increase from previous company guidance. Check whether the new guidance also exceeds the market's already higher consensus.

For example, shares may fall even if revenue guidance rises from 100 to 105, when the market already expected 110.

3-8. Unofficial expectations may exceed published consensus

A company whose shares rallied before earnings may already have results above official consensus priced in.

This is often described as:

• High expectations
• Buy-side expectation
• Whisper number
• Expectations beyond expectations
• Perfection priced in

Consider the following example.

• Official revenue consensus: KRW 1,000 hundred million
• Investor expectations implied by the recent rally: KRW 1,080 hundred million
• Actual revenue: KRW 1,050 hundred million

This is a 5% beat versus official consensus.

\[ (1,050-1,000)\div1,000=+5\% \]

But it misses the unofficial expectation of KRW 1,080 hundred million.

\[ (1,050-1,080)\div1,080\approx-2.8\% \]

The reported number may therefore officially beat consensus while the shares fall.

Unofficial expectations are difficult to verify in precise disclosed figures. Infer them indirectly from:

• The pre-earnings rally
• Valuation level
• Recent upward analyst revisions
• Options-implied volatility
• Share-price reactions to peer earnings
• Institutional positioning concentration
• Short positions or short interest
• Growth implied by reverse DCF

3-9. Shares trade on the next estimates, not the current quarter

Analysts revise future estimates after earnings.

\[\text{New company value}=DCF(\text{Revised future FCF},\text{Revised WACC})\]

To understand the share-price response, ask:

• Will next quarter's revenue estimate rise?
• Will next year's EPS estimate rise?
• Will margins normalize sooner?
• Will higher CapEx instead reduce FCF estimates?
• Will the growth period lengthen?
• Will lower business risk support a higher valuation?
• Will weaker confidence in management raise the discount rate?

The most persistent post-earnings influence on share prices is generally the direction of EPS and FCF estimates for the next 12–24 months.

3-10. Interpretation may change between the release and the earnings call

U.S. companies often issue earnings releases after the close and hold conference calls afterward.

The share-price response may change through several stages:

1. Headline revenue and EPS release
2. Review of guidance
3. Review of earnings materials and notes
4. Management's prepared remarks
5. Analyst Q&A
6. Estimate and price-target revisions
7. Institutional trading in the next regular session

For example, shares may initially rise on a headline EPS beat, then fall when the call reveals:

• Delayed orders from a major customer
• Price cuts
• Margin deterioration
• Higher-than-expected CapEx
• Inventory growth
• Delayed product launches
• Regulatory risk
• A high share of nonrecurring revenue

Do not treat the initial after-hours response as the final assessment.

4. A simple numerical example

The following are growth company A's hypothetical quarterly results for learning. Amounts are in KRW hundred million; EPS is in KRW.

① Pre-release market expectations

② Actual reported results

Revenue exceeded consensus by 5%.

\[\text{Revenue Surprise}=\frac{1,050-1,000}{1,000}\times100=5\%\]

Reported EPS also exceeded consensus by 10%.

\[ EPS\ Surprise = \frac{1,100-1,000}{1,000}\times100 = 10\% \]

The headlines alone suggest good results.

③ Check EPS quality

Assume, however, that reported EPS of KRW 1,100 includes a one-off tax benefit of KRW 150.

\[\text{Normalized EPS}=1,100-150=950\text{ KRW}\]

Normalized EPS is below consensus of KRW 1,000.

\[\text{Normalized EPS Surprise}=\frac{950-1,000}{1,000}\times100=-5\%\]

The appropriate interpretation is:

• Reported EPS: 10% beat
• Normalized EPS: 5% miss
• Operating profit: 3.3% miss
• Gross margin: 1.0 percentage-point miss

The EPS beat primarily reflected a one-off tax benefit, not improvement in the core business.

④ Check next-quarter guidance

Assume next-quarter revenue guidance is KRW 1,020–1,060 hundred million.

The guidance midpoint is:

\[\text{Revenue guidance midpoint}=\frac{1,020+1,060}{2}=1,040\text{ hundred million KRW}\]

Market consensus was KRW 1,100 hundred million.

\[\text{Guidance Miss}=\frac{1,040-1,100}{1,100}\times100\approx-5.5\%\]

Even the upper bound of KRW 1,060 hundred million falls below consensus of KRW 1,100 hundred million.

If next-quarter gross-margin guidance is 38.5%, it is also 2.5 percentage points below consensus of 41.0%.

⑤ Why might shares fall?

The release can be summarized as follows.

The results can therefore be summarized as follows.

“Revenue beat expectations, but margins and core earnings were weak, and the reported EPS beat depended on a one-off tax benefit. Next-quarter revenue and margin guidance also missed consensus, making downward revisions to future estimates likely.”

A share-price decline would not be irrational: the market is lowering future estimates.

5. Practical use in equity and company analysis

① Prepare an expectations table before earnings

Seeing the figures for the first time after release makes assessment difficult. Preparing this table beforehand is useful.

Day 13's reverse DCF can help assess the last column: long-term expectations required by the current share price.

② Read an earnings release in five layers

Layer 1: Headlines

• Revenue beat/miss
• EPS Beat/Miss
• Operating-profit beat/miss

Layer 2: Core business metrics

• Sales volume
• Price
• Customer count
• Orders and RPO
• Market share
• Cloud, advertising and subscription growth
• Inventory and utilization

Layer 3: Earnings quality

• Gross margin
• Operating margin
• One-off gains and losses
• Tax rate
• Stock compensation
• Working capital
• FCF

Layer 4: Future guidance

• Next quarter
• Full-year outlook
• CapEx
• Margin
• New-product timetable
• Demand and pricing outlook

Layer 5: Estimate and valuation changes

• Upward or downward revisions to future EPS and FCF
• Price-target changes
• Changes in applied P/E or EV/EBITDA
• Whether reverse-DCF-implied expectations are met

③ Focus on the quality, not just the size, of the beat

Assume both of the following companies beat EPS by 10%.

Company B

• Revenue: +8% beat
• Gross margin: +2 percentage-point beat
• Operating profit: +15% beat
• Improved FCF
• Raised next-quarter guidance

Company C

• Revenue in line with consensus
• Operating profit: -5% miss
• EPS: +10% beat due to tax benefits
• Inventory growth
• Lowered next-quarter guidance

Despite identical EPS beats, company B's results are far higher quality.

A useful evaluation order is:

\[\text{Revenue}\rightarrow\text{Core KPIs}\rightarrow\text{Margin}\rightarrow\text{Normalized EPS}\rightarrow FCF\rightarrow\text{Guidance}\]

④ Assess the direction of the next estimates

Answer these questions immediately after earnings:

• Will next-quarter revenue estimates rise?
• Will next year's operating margin rise?
• Will higher CapEx lower FCF estimates?
• Will stock compensation increase diluted shares?
• Is the growth slowdown temporary or structural?
• Can the company maintain its long-term targets?

If this quarter's beat does not translate into next-quarter estimates, upside may be limited.

⑤ Interpret share-price reactions separately from results

A falling share price does not necessarily mean poor results. A rising price does not necessarily mean the business improved.

Share-price responses are also affected by:

• The pre-release rise or fall
• Valuation
• Options-market positioning
• Institutional crowding
• Short selling and covering
• Macroeconomic and interest-rate changes
• Peer results
• Index and ETF flows

⑥ Set a higher bar for shares that rallied before earnings

If shares rose substantially before earnings, check:

• Did EPS estimates rise along with the shares?
• Did only the share price rise?
• How much did P/E or EV/EBITDA expand?
• Were expectations above official consensus priced in?
• Is the options-implied move large?
• How did sector peers react to earnings?

If shares surged while earnings estimates stayed flat:

\[\text{Share-price increase}\approx\text{Valuation expansion rather than earnings improvement}\]

A small consensus beat may then be insufficient to sustain the higher valuation.

⑦ Use the call to understand the causes behind the numbers

Listen for answers to these questions:

• How much did volume, pricing and product mix contribute to revenue growth?
• What demand assumptions underpin guidance?
• Is the margin decline temporary?
• When will new products enter mass production and generate recognized revenue?
• Does inventory growth reflect production ahead of demand or weak sales?
• Is higher CapEx maintenance or growth investment?
• How long will supply shortages, delayed customer orders and price competition last?
• Has major-customer concentration changed?
• Which working-capital changes will affect next quarter's FCF?

Avoiding direct answers or repeatedly changing explanations across quarters may justify a discount for reduced credibility.

⑧ Summarize the practical judgment in one sentence

After earnings, try writing a sentence structured as follows.

“In these results, current-quarter figures were better than expected, but core KPIs and earnings quality were weak, and future guidance fell below consensus, so next year's EPS and FCF estimates may be revised down.”

Alternatively:

“Revenue missed consensus because of temporary supply disruption, but orders and guidance rose, so future revenue and margin estimates may actually increase.”

If you cannot write this sentence, you may have reviewed only headline figures.

6. What to look for in filings

For today's topic, distinguish official company releases, regulatory filings, earnings calls, Market consensus.

Korean companies: DART, KIND and company IR

Financial Supervisory Service DART and Korea Exchange KIND for the following materials.

Preliminary results may differ from the formal quarterly report. Subsequent filings may reveal:

• One-off nonoperating gains and losses
• Income attributable to noncontrolling interests
• Tax effects
• Working-capital changes
• Segment profitability
• Inventory and receivables
• Detailed CapEx
• Diluted share count

Korean companies often do not provide a formal numerical guidance range every quarter as U.S. companies do. Distinguish company IR business plans and demand outlooks from market consensus.

U.S. companies: SEC 8-K, 10-Q, 10-K and official IR

SEC EDGAR and the company's official IR website in the following order.

Immediately after the earnings release

• Form 8-K
• Item 2.02 Results of Operations and Financial Condition
• Exhibit 99.1 Earnings Release
• Earnings presentation
• Official company guidance
• Non-GAAP reconciliation

Formal quarterly report

• Form 10-Q
• Part I, Item 1. Financial Statements
• Part I, Item 2. MD&A
• Financial-statement notes

Annual report

• Form 10-K
• Item 7. MD&A
• Item 8. Financial Statements and Supplementary Data

In particular, check:

• Revenue
• Gross margin
• Operating income
• Net income
• Earnings per share
• Stock-based compensation
• Restructuring charges
• Income taxes
• Other income and expense
• Operating cash flow
• Capital expenditures
• Segment information
• Remaining performance obligations
• Deferred revenue
• Inventory
• Diluted shares

When a company reports adjusted EPS or operating profit, always check the reconciliation to GAAP figures.

\[\text{GAAP earnings}\rightarrow\text{Excluded items}\rightarrow\text{Non-GAAP earnings}\]

Repeatedly excluding stock compensation, restructuring and acquisition costs may overstate economic profitability.

Information to check outside filings

Formal financial statements alone rarely reveal:

When using consensus, always check the provider and reference timestamp. Consensus a week before earnings can differ substantially from estimates immediately before release.

7. Key takeaways

• Share prices respond to the gap between priced-in expectations and actual results more than to absolute earnings levels.
• Year-over-year growth, a consensus beat and upward future revisions are different concepts.
• An earnings surprise measures the difference between actual results and market consensus.
• A high-quality beat combines improved revenue, core KPIs, margins, normalized EPS and FCF.
• Reported EPS may beat consensus because of one-off tax benefits, asset sales or FX gains.
• Compare guidance with market consensus as well as previous company forecasts.
• Shares may fall despite an earnings beat if below-consensus guidance drives downward future revisions.
• Shares may fall on a beat if prices reflect unofficial expectations above published consensus.
• After earnings, the key issue is the direction of EPS and FCF revisions for the next 12–24 months.
• Initial after-hours moves may reflect only headlines; also review the call, Q&A and regular-session reaction.
• The practical analysis sequence is Revenue → Core KPIs → Margin → Normalized EPS → FCF → Guidance → Estimate revisions.

8. Three review questions

Question 1

A company's revenue consensus is KRW 2,000 hundred million and actual revenue is KRW 2,120 hundred million. What is the revenue surprise percentage?

Question 2

Next-quarter revenue guidance is KRW 1,400–1,500 hundred million. Consensus is KRW 1,550 hundred million.

1. What is the guidance midpoint?
2. How far below consensus is the midpoint in percentage terms?
3. Does the upper bound meet consensus?

Question 3

A company reports:

• Revenue: +4% versus consensus
• Reported EPS: +12% versus consensus
• Operating profit: -6% versus consensus
• EPS includes a one-off asset-sale gain
• Next-quarter revenue guidance: -7% versus consensus
• Next-quarter operating-margin guidance: below consensus

Explain why its shares fell after earnings.

Answers and explanations

Answer 1

\[\text{Revenue Surprise}=\frac{2,120-2,000}{2,000}\times100\]

\[\text{Revenue Surprise}=6\%\]

Actual revenue exceeded consensus by 6%.

Answer 2

The guidance midpoint is:

\[\text{Guidance midpoint}=\frac{1,400+1,500}{2}=1,450\text{ hundred million KRW}\]

The difference from consensus is:

\[\text{Guidance gap}=\frac{1,450-1,550}{1,550}\times100\]

\[\text{Guidance gap}\approx-6.5\%\]

The guidance midpoint is approximately 6.5% below consensus.

The upper bound of KRW 1,500 hundred million also misses consensus of KRW 1,550 hundred million. Even achieving the upper bound would miss existing expectations, so revenue estimates may fall.

Answer 3

Headline revenue and EPS beat consensus, but earnings quality and the outlook are weak.

• Revenue beat by 4%, but operating profit missed by 6%. Revenue growth did not sufficiently convert into profit.
• The 12% EPS beat includes a one-off asset-sale gain. Repeatable core EPS is below the reported figure.
• Next-quarter revenue guidance is 7% below consensus, making downward revenue revisions likely.
• Operating-margin guidance is also weak, so future operating-profit and EPS estimates may fall more than revenue estimates.

The market can therefore be interpreted as placing more weight on weak normalized earnings and lower future guidance than on this quarter's superficial EPS beat.

Next lesson — Day 15 · Stock-market structure:
“Why Does a Stock Trade at That Price? — Quotes, Market and Limit Orders, and the Order Book”